Question
Accenture Pte. Ltd.
SG
Last activity: 9 Apr 2020 5:16 EDT
What is the minimum and maximum heap size recommended for pega 7.4
Hello,
What is the recommended minimum and maximum heap size for pega 7.4?
Does heap size recommendation depends on any parameter value (e.g. transaction volume, environment)?
On what basis Pega support recommend min and max heap size?
Is there any benchmark documentation available for peha heap size recommendation?
Updated: 14 Jun 2021 7:38 EDT
Pegasystems Inc.
IN
The suggested system heap size is 4-8 GB.
Please find the below article in which you can find more details in Application server Requirements topic.
https://community.pega.com/system/files/pdfs/Pega74-install-tomcat-oracle_1.pdf
Pegasystems Inc.
IN
All systems require a supported 64-bit JDK.
• 1 GB minimum free disk space. You might need additional storage space for debugging and logging.
• Memory requirements: Pega Platform runs in memory (heap) on Java Virtual Machines (JVMs). In general, all activity is distributed over multiple JVMs (nodes) on the application server.
• Standard suggested system heap size is 4 - 8 GB based on monitoring of memory usage and garbage collection frequency.
• Larger heaps are advisable if your applications allow a high number of concurrent open tasks per session or cache a large collection of transaction or reference data.
• Do not deploy Pega Platform in an environment where the heap size exceeds the vendor-specific effectiveness limit.
• Oracle JDKs use compression to minimize the cost of large heaps. The compression option is labeled CompressedOOPS and is effective up to 32 GB. In current 64-bit JVMs, compression is enabled by default.
• The host application server memory size must be at least 4 GB larger than the Pega Platform heap size to allow space for the operating system, monitoring tools, operating system network file buffering, and JVM memory size (-XMX option). The minimum host application server memory size is 8 GB: 4 GB heap + 4 GB for native memory, operating system, and buffering